The present invention concerns an apparatus for electrical therapies comprising at least one electrocatheter (10, 210, 310, 410), or an electroneedle, and at least one power supply device (20, 120A, 320A) capable of electrically supplying the electrocatheter or electroneedle with at least one current suitable for carrying out at least one therapy, characterised in that it comprises at least one system (90) for testing whether at least one desired point of application of the electrocatheter or electroneedle (10, 210, 310, 410) has been reached in the body of a patient, the testing system comprising at least one device for emitting an electric testing current (20, 120A, 320B) with which to electrically supply the electrocatheter (10, 210, 310, 410) or electroneedle before the start of the therapy, and at least one reading device, capable of providing at least one reading (60) of at least one response generated in the patient (66) by the electrostimulation with the electrocatheter (10, 210, 310, 410) or electroneedle through the testing current.
